That value does not disappear if the state + courts also build in processes for over-ruling the on-chain owner of an object and forcibly transferring it to someone else. The core value here comes from how much easier it is to clear all of the red tape in a fully programmatic world.
Before I buy an NFT, I'll have to check the GovLedger anyway to make sure that NFT is actually that person's to sell, and hasn't got a lien on it or something else that means they can't actually sell it.
If the idea is the blockchain is permissioned and the state can choose which transfers to allow and can forcibly recover NFTs, why not just use a database?
Regarding liens, it seems simple enough to say that if someone does not own an NFT "free and clear", then they cannot transfer it "free and clear". It might even be a different NFT entirely (a "liened NFT," where the original un-liened NFT is held in trust by yet another smart contract, with limited or conditional ownership rights given to the lien holder.)
The reason not to use a database is interoperability. Any smart contract can transfer these NFTs according to infinitely nuanced scenarios, and only during disputes would a court need to get involved and forcibly transfer the NFT according to a judgement.
The typical case where all is not equal in finance is where currently parties transact via a trusted intermediary like a clearinghouse (who might take a 1% fee, say), and a startup wants to allow parties to transact directly, thereby capturing the fee as upside. Large financial institutions don’t tend to trust small startups that might implode any month, but they can (sometimes, it seems) be persuaded to trust a distributed ledger.
Suppose I die taking my wallet keys with me; how do my heirs inherit my NFT-ized house?
If the government is minting these NFTs and deciding which transfers are legitimate and which aren't, why are we bothering with all this?
Basically: at some point, an NFT will become separated from the ownership as recognized by the people who count (banks, governments, etc). Without a mechanism to reunite them, the NFT is not very useful; but if there is some sort of mechanism, it's really that mechanism that determines ownership, not the NFT and you might as well use a centralized ledger.
It’s important to understand that these tokens aren’t going to replace the existing legal system (much though the anarchist/libertarian wing of the crypto community might wish it). They just enable certain transactions to occur with lower overhead and time delay. This is about improving friction in the happy path, not providing new solutions for every conflict case.
Personally I don’t think there is a reason to put your primary residence one the blockchain (you don’t trade it that often). But it’s interesting for places where you might want to trade assets at higher frequency (eg micro loans, supply chain finance, etc) and maybe there is a real-estate trust angle too.
ex, if the law requires an actual notarized handwritten signature to transfer ownership, what you and I do on the blockchain will simply not count when it comes down to it.
If I accidentally burn the NFT that represents ownership of my house I'm definitely still the owner of the house, there's no world where a government would shrug and say "I guess nobody owns it anymore, oops"